Petrus/C-W-S (and anybody else interested),
I have been using a disposable email system for many years that is really easy to setup and you can compose easy new addresses “on the fly”, they are forwarded to a protected address that you supply. As I can allocate an email address to each site I sign up at then I can easily see who has sold or leaked my address. As they are disposable I can instantly change or stop the forwarding. As a satisfied user of the site for more than a decade that is my recommendation, the site is Spa*gourmet.com where * replaces the m! It allows you to use different domain names so that obvious word is not blocked. One of the domains is “antichef.com” - so you can possibly see my username was linked to my signup in 2006 - just in case FT turned out to be dodgy